I've been driving my M4A3E2 for a while now and I'm noticing that all of a sudden in the middle of a battle the tank will just stop and not respond to my key strokes for moving forward, back or turning. Then I'll just hold down the 'W' key and it will continually stop, then go, then stop then go. Then someone kills me. At first I thought I needed to replace the batteries on my keyboard (wireless) but that didn't work. This only happens with my M4A3E2 and not my other tanks.